But,he said the tasks exceed the capacity of the United States alone and that collective efforts, are needed including by critics of past U.S.policy.

VOA: standard.2009.09.23

We should base American foreign policy on power and interest alone."

我们应该,在制定外交政策时只考虑权力和利益问题“

普林斯顿公开课 - 国际座谈会课程节选